Pulley



Nov. 24, 1931. MEYER 1,832,871

PULLEY Filed Sept. 12, 1928 2 Sheets-Sheet 1 attozmq F. MEYER NOV. 24,1931.

PULLEY 2 Sheets-Sheet .2v

Filed Sept. 12, 1928 a m. n

Patented Nov. 24, 1931 FRED IMIE'YER, F GALESBURG, ILLINOIS ruLLEYApplication filed September 12, 1928. Serial No. 305,416.

This invention relates to pulleys, and is directed particularly topulleys fabricated from sheet metal, and the method of producing thesame.

.13) An object of the invention is to construct pulleys of any desireddimensions from sheet metal stampings whereby they can be more readilymade to run true and that they may be more quickly produced at reducedcost, while being exceedingly rigid throughout.

Another object is that pulleys made from stock stampings of a givendiameter may be altered in width, and, if desired. may be p weighted aswanted whereby the pulleys may answer as flywheels in addition to theirpulley duties.

Still another object is to construct the body of a pulle and its hubfrom stamped metal parts including project ons on said hub 26 adaptedfor use in connecting the whole as a rigid structure.

A further object is to furnish a pulley of sheet metal that may bechanged in the matter of width of belt groove by adding parts i betweenthe body parts, as well as to increase the pulleys weight to provide forflywheel efi'ects.

In addition to these objects the invention lies in certain details ofconstruction and arrangement of parts to be po nted out herein and toform the subject of certain of the cla ms to follow. i V

In the appended drawings forming part hereof,

Figure 1 is a side elevation of a pulley constructed according to myinvention.

Figure 2 is a transverse section of the pul ley on line 22, Figure 1.

Figure 3 is a side elevation of a. clamping rine shown in the first twofigures.

Figure 4 is a perspective of part of a ring 1 of the type shown inFigure 3 but much enlarged.

Figure 5 is an end elevation of a hub cap or shell.

Figure 6 is a side elevation of the same. 7

Figure 7 is a transverse section of a filler ring as part of the pulleyhub.

Figure 8 is a side elevation of a spacer'ring shown in FigurcQ.

' Figure 9 is'a transverse section of the pulley shown in Figures 1 and2 showing its main parts spaced from one another for wideningthebeltgroove thereof.

a Figure '10 is a transverse section of part of a pulley of a sli htlymodified type showing a weight adding ring.

Figure 11 is a plan of a spacer ring shown in Figure 9, and I Figure 12is a modified form of a weighted pulley, in cross section.

Pulleys of any desired diameter may be constructed and in practice Ihave produced them up to a diameter of at least fifteen inches,employing dies from which to form the various parts used in constructingthe same, and drawings herein showing a pulley of about five inchesdiameter as an example of the methodemployed and the parts used. l

Duplicate portions 1 and 2 are provided as to the ma n parts or body ofthe pulley, Figures 1 and 2, it being observed that each preferablyincludes a peripheral flange 3, while inward therefrom the parts aredished as at 4 so that when these parts are placed back to back aV'-shaped space is created in this instance to receive the now widelyused V-tvpe of belt, not shown.

The more central zone of the stamped parts 1, 2 are each outwardlybellied as at 6 creating a space 7 this structure serving as a brace ortrussing for strengthening the pulley as well as to provide for fillerwashers to be interposed between the walls thus spread. That is to say,a series of spacers 8. are provided, the combined bulk of which maycorrespond in thickness to the space provided between said parts 1, 2-,and abutting on each outer surface of the latter is aclamping ring 9 toreceive attention later. 1

In the form shown in Figuresl andQ the structure just describedconstitutes the body of the pulley, attention now being directed to thehub for the pulley'and the method of constructing it and the manner ofits attachment to said body. In Figures 2, 5 and 6 the said hub is shownto be made up of an outer drawn shell 10 in the form of a cup projectingfrom whose flange-ends is a series of extensions or arms 11 of a lengthto permit them to extend entirely through the rings 8 and the parts 1and 2 as well as the said clamping rin s 9. In order to provide a hub ofsolid form throughout a series of filler rings 12, Figures 2 and 7 areforced into the shell entirely filling the space thereof and providingav body, see Figure 2, in which a bore 13 is created for the pulleyshalt, not shown. Said rings 12, so created by reason of the bore 13,are preferably made in a slightly concave or dish form as shown inFigure 7 and in that form will ust snugly fit into the cavity of thesaid shell 10, each ring having an opening let which may be entirelycircular, when a set screw is to be used as the securing means for thepulley, or may have a notch as a keyway to correspond with a. like notchor keyway in the shell 10. Since 01": a dished "form. the rings afterbeing placed within the shell are spread to a slightly larger diameterby means of a suitable die and by the use or" a very heavy pressure. Inother words, with a die about of the diameter of the rings and with thenamed heavy pressure it is clear that the peripheries of the rings canbe spread outwardly into frictional contact with the shell walls thusforming a hub as solid as though the whole were of a single body ofmetal.

All of the spacer rings 8 and the clamping rings 9 as well as the parts1, 2 are provided with a series of holes evenly spaced from the bore 13and correspond in position and spacing to the extensions 11 ot thehub-shell 10. In Figure 8 these holes are indicated at 8 in one of thespacer-plates 8, while in Figure 3 the holes are designated at 9 in oneof the clamping plates or rings 9, said holes in one of the latter beingpreferably countersunk as at 9 see Figure 4, for a purpose to appear.Again, as shown in broken lines in Figure 1 and in Figure 2 the parts 1,2 have corresponding holes 1.

lVhen the several parts of the pulley structure are adjusted to bringall of the holes into alignment the extensions of the shell 10 may bepassed therethrough the extremities thereof being upset or riveted intothe countersinks 9 The two clan'rping plates are provided as a finishfor the pulley one of them receiving the open end of the shell 10against it. W hen the assembly 0t parts is subjected to pressure and theextensions are thus riveted the whole structure is perfectly rigid andas secure as though a cast body. The hub since made up of the shellportion 10 ii'icluding the filler rings 12, and since, also. it isafiixed to the body by having its extensions 11 passing through thewhole provides an exceedingly staunch job.

The parts 1, 2 may be spot welded at 16. Figures 1 and 2-, or may beotherwise socured one to the other.

lVhen the pulley otherwise complete a tool may be inserted into the bore13 for smoothing the same and making it uniform throughout, this beingtrue, as well, of the keyvay created therein by the notches 9", 10, 15.

I I In Figure 9 the same structure is shown,

the parts being identified by the same reference characters as before.In this case, however, the main parts .1, 2 are separated a distanceequal to that of a belt. not shown. that may be of a largercross-section than would fit the groove of the pulley shown in theearlier figures. That is to say, where the use of a belt of larger sizeis desired a wider spread of the parts 1. i2 is necessary and to thatend one or more spacing rings 17 may be inserted between said parts 1, 2whereby to provide the necessary or required separation. one of the saidrings being shown in Figure 11, and rivets 18, for example, may beemployed at seve a1 positions to complete the structure. 7

These additional spacing rings also serves as a additional weightthusgiving a ilv wh el eilect to the pulley, or in Figure 10 is shown awheel. having the same belt space as Figure 2 but in this case the partsdesignated by A. ll correspond to 1 and 2 in the earlier figures and areformed each at corresponding positions with the outwardlv bulg mgportion C within which is enclosed a body that may be composed of one ormore rings D corresponding in form to that shown in Figure 10. Thepulley mav be made as heavy as desired in this wav to provide Forflywheel, effects. I

In this case the said rings 1) which form the inner hub rings of Figure3 are enlarged to diameter and thus the added weight results.

Again. in Figure 12 the body portions l F. have the bulging portions Gwithin which may be enclosed aweight-ring H in addition to the flatspacer rings J as before, thus adding weight for fly wheel purposes.

In addition, two rings K each of a diameter sulistantially equal to thatoil the pulley are housed in the pulleys rim. the metal of the membersor portions E. F. being formed about the rings. as denoted at L. Thisconstruction is very ellicient for fly wheel effects and any weight maybe added to a wheel of a given diameter by increasing the cross sectionof any such ring K so used.

it is to be understood that my invention anplies to flat face pulleys aswell as those oi the grooved type since my improved construction appliesetpially to either.

I claim:

l. A pulley including a pair of stamped metal members Forming its bodv.the same adapted to lie one upoi'rthe other and spar-Ml i z'oin eachother near their perimctcrs creating a belt groove. said members alsobcin spaced at their centers of rotation. a series oi plates interposedbetween the members i iilin g said space creating a hub portion, a hubportion outside one of the. membersabutting thereon comprising a seriesof plates, and means to secure all of the described parts in rigidrelation.

:2. A pulley comprising a pair of stamped f metal members forming thebody thereof abutting one upon the other and spaced apart in the centralzones thereof, a series of plates interposed between the memberscreating a hub portion, a hub portion comprising a cupped member havingprojections extend ing through the said members and plates and securedtherein, and a series of plates within and filling the cupped member,there being a bore extending through all of the described parts.

3. A pulley comprising a pair of stamped members abutting one on theother and each having a central outwardly bulged zone together creatinga cavity between the members, a series of plates filling the cavity andabutting upon both the stamped members, there being a series of holesthrough all of the named parts, a. cupped shell having extensions topass through the said holes and se cured at their extremities, and aseries of members lying upon one another filling the cavity of the shelland frictionally engaging the Walls thereof.

at. A pulley including a pair of stamped metal members lying back toback spaced apart at the central zones thereof, a series of plates lyingbetween and abutting upon both members. a cupped portion abutting uponone side of the structure and having fingers extending entirely throughthe same and riveted upon the opposite side of such structure, and aseries of filler plates within the cup immovably fixed therein.

5. A pulley including a pair of stamped metal members lying back to backspaced apart at the central zones thereof, a series of plates lyingbetween and abutting upon both members, a cupped portion abutting uponone side or" the structure and having fingers extending entirely throughthe same and secured upon the opposite side of such structure, and aseries of filler plates with n the cup immovably fixed therein, therebeing a bore extending through the entire structure thus built up.

6. A pulley of sheet metal including a pair of stamped members abuttingea h other forming the pulley body and each spread apart from the otherat its center, a series of plates filling the space thus created, aclamping ring outside and abutting each member, a cupped portion havingextended fingers piercing the whole and secured upon one of said rings,and a series of filler plates in said cupped portion abutting the otherof the clamping rings, the said cupped portion constituting an extendedhub portion.

T. A pulley including in its construction a.

pair of stamped members abutting each other and flared in oppositedirections to form a belt groove between them. a ring abutting eachmember at its outer side, each member at its perimeter enclosing thering adjacent to it, the center of the opening of the ring coincidingwith the axis of rotation of the pulley.

8. A pulley including in its construction a pair of stamped membersabutting each other and fiared in opposite directions to create a beltgroove between them, a ring lying in the plane of the pulley at eachside thereof, each member at its edge engaging around and enclosing itsadjacent ring, the said members being spaced apart near their centers, aring enclosed between the members in the resultant space, a series ofplates interposed between the members in said space within the bore ofsaid ring, and means to secure the Whole relatively.

9. A pulley including a pair of abutting stampedmembers forming thepulley body, said members being spaced to form a belt groove and spacedat their centers forming a cavity, a solid filler within the cavityabutting the members, and a hub portion consisting of a member having anintegral projection extending through the filler and the members andsecured with respect thereto.

In testimony whereof I afiix my signature.

FRED MEYER.

